<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/vuejs-2.5.16.js"></script>

</head>
<body>

        <div id="app">
            {{message}}   <!--插值表达式--><br/>
        </div>



</body>


<script>
    new Vue({
        el:"#app",       //id为app里面的所有内容被vue接管
        data:{
            message:"hello world vue"
        }
    });
</script>

</html>